DE1560613C - Device for changing package bobbins on winding machines with drive of the bobbins on the circumference - Google Patents

Description

2. Apparatus according to claim 1, characterized in that the support arm (3) has two pressure rollers (4, 5) are arranged and that the auxiliary arms (29) are pivotable on the support arms (3) are attached and at each of their ends a roller (33) to rest on the edge of the bobbin carry.

3. Apparatus according to claim 1, characterized in that the support arm (3) has a pressure roller (4) is arranged and that the second pressure roller (5) is hinged to the one on the support arm (3) Auxiliary arm (29) is attached.

4. Device according to one of the preceding claims, characterized in that the Switching arms (18) sit firmly on a shaft (22) that the push-off arms (19) are rotatable on the Shaft (22) are arranged and that the spring-loaded in the direction of the switching arms (18) Push-off arms (19) can be locked by a pawl (53).

The invention relates to a device for changing the package on winding machines with a drive of the coils on the circumference, in which the cylindrical bobbin case with its edges on on in the direction of the drive roller is mounted pivotable support arms arranged pressure rollers and the winding thread is fed from above via a traversing device.

The British patent 802 449 already discloses a winding device for cylindrical bobbin tubes became known with the features mentioned above, in which the package change a Interruption of the thread run requires and not

ao takes place automatically. In the spindleless one made known by the German patent specification 900 431 An automatic bobbin change is provided for the winding machine, but the thread path must be used for this be interrupted, since it is necessary when changing the bobbin, which in this device on a Mandrel seated coil to move in the axial direction relative to the dome. Although in this winding machine pivotable holding arms provided with rollers are provided, but the spool is driven via

zo the retaining pin.

Also in a machine made known by the Austrian patent specification 131423 another type, namely a fleece winder, in which fiber or fleece tapes are wound, must the supply of the goods to be wound can be interrupted when moving from a full spool to an empty one Coil is to be passed over.

The invention is based on the problem of using features that are known per se to create a winding machine of the type mentioned at the outset, in which the thread run is not interrupted an automatic package change takes place, as is the case, for example, on jet spinning machines is known.

According to the invention this object is achieved by adjacent and above the support arms for the Arranged take-up reel, swiveling changeover and push-off arms in the direction of the drive roller with take-up rollers for holding an empty bobbin and for pivoting it towards the drive roller to prepare for the bobbin change; by a device for transferring the winding thread from the Take-up bobbin on the preparatory set in rotation empty bobbin, consisting of one on one Swivel arm arranged guide roller for laterally bringing the winding thread to a catching slot the empty bobbin, the swivel arm together with another guide roller on a shaft sits; by auxiliary arms for pushing off the full package after the thread transfer has been completed and through devices for the automatic, timed actuation of the support arms of the switching and push-off arms, the device for transferring the winding thread and the auxiliary arm.

In general, the use of pivotable, 'provided with rollers holding arms to carry out the Spool change has already become known from the German patent 900 431 dealt with at the beginning, however, the package is stored there between tips, with the bobbin change being an axial one Requires displacement between the coil and the holding tips or holding mandrels, while in the case of the invention the take-up bobbin driven on the circumference with simultaneous introduction of the new empty bobbin in is thrown off in the direction perpendicular to the axis of rotation. By the German patent specification 974 536 it is already known to guide the bobbin thread laterally when changing the bobbin without interrupting the thread run

so that it is caught through a slot in the new bobbin and wound onto the empty bobbin tube. In the device described in this publication for the continuous winding up of endless threads or ropes, such as those used in the manufacture or aftertreatment of artificial or fully synthetic ones Threads accrue after the wet, dry or melt spinning process, but it is not to a winding machine of the type according to the invention. Even with those in the German patent specification 800 087 and in the French patent 1 308 576 described bobbin changing devices it is not about winding machines with drive of the bobbins on the circumference.

According to a preferred embodiment of the invention it is provided that the support arm two Pressure rollers are arranged and that the auxiliary arms are pivotably attached to the support arms are and at their ends each carry a role to rest on the edge of the bobbin. Alternatively, you can it can also be provided that a pressure roller is arranged on the support arm; and that the second pinch roller is attached to the auxiliary arm articulated on the support arm.

Another embodiment of the invention is characterized in that the switching arms are fixed sit on a shaft that the push-off arms are rotatably arranged on the shaft, and that the direction The push-off arms spring-loaded on the switching arms can be locked by a latch. This has the The advantage that the position in which the empty reel to be fed begins its preparatory rotation is accurate can be set, whereby the lateral guide can be located far forward. This allows the free running yarn length can be kept very short.

In the following description, various exemplary embodiments are based on the drawings explained in detail. It shows

Fig. 1 shows an embodiment of the invention Winding machine in side view;

F i g. 2 shows the bobbin change in the case of the one shown in FIG. 1 shown embodiment in the front view;

F i g. 3 shows how to change the bobbin in the case of the one shown in FIG. 1 embodiment shown in side view;

F i g. 4 two side views of the in F i g. 1 to 3 shown embodiment to explain the Bobbin change;

Fig. 5 shows another embodiment of the invention Winding machine in side view; and

6 shows a third embodiment of the winding machine in side view.

In the embodiment shown in FIG. 1, a drive roller 1 rotating at constant speed drives a package 2 on the circumference. The winding bobbin 2 rests with its edges on pressure rollers 4 and 5, which are each rotatably mounted on one end of a support arm 3. The yarn y running onto the winding bobbin 2 is guided transversely to the winding bobbin by a transverse guide 7 which is arranged at the outermost end of a thread guide device 6. The support tubs 3 are pivotably mounted at 9 and are loaded at their other ends with weights 8 so that they press the take-up bobbin 2 against the drive roller 1 with sufficient pressure. In an oil-filled cylinder 10, a piston 11, which is loaded by a helical spring 12, is slidably arranged. A chain 13 extends from the end of the piston and engages the support arms 3 via a guide roller 14. As a result, the pressure exerted on the circumference of the package is kept constant during the winding process.
In the manner of a known shock absorber, which is used to absorb shocks, for example if the support arms 3 suddenly go down as a result of an operational malfunction, bores are provided in the piston 11 for the oil to flow through.

ίο A crank disk 15, one of which is eccentric located point from a chain 16 via rollers 17 and 17 'to the support arms 3, serves as Quick retraction means for moving the support arm up and down. An empty reel 2 "is through Switching arms 18 and pushing arms 19 are held, each of which has receiving rollers 20 and 21 at its ends exhibit. The switching arms 18 are firmly seated on a rotatable shaft 22 which is used to limit the angle of rotation which has repulsive arms 19 pivotably arranged on the shaft 22. The push-off arms 19 are preloaded in the direction of the switching arms 18 by means of a torsion spring, not shown. As long as the empty bobbin rests on the switching and pushing arms 18, 19, they do not move. the named torsion springs have the purpose of the empty bobbin, as explained in more detail below is, when the bobbin change, which is initiated by a rotation of the shaft 22, to initiate a Rotation of the empty reel 2 'to press against the drive roller 1.

The bobbin change can be clearly seen from FIGS. 2 and 3. As soon as the currently in operating position The take-up bobbin 2 is almost completely full, the shaft 22, which carries the empty bobbin 2 ', rotates. supporting switching and pushing arms 18 and 19 carries to a certain amount. This has to As a result, the empty bobbin comes to rest on the drive roller 1 and begins to rotate. For a certain Time the shaft 22 now remains in this position, as shown in FIG. 3 is shown. The yarn y runs here under the empty bobbin 2 'and continues to be wound onto the winding bobbin 2. As soon as the Empty bobbin 2 'rotates synchronously with the package 2, the bobbin thread from the package 2 on the Empty reel 2 'transferred. This takes place automatically according to a predefined program, like the one in general entire chronological sequence of the actuation of the support arms 3, the switchover and push-off arms 18 and 19 as well as the device for transferring the winding thread y, for example using hydraulic or pneumatic ones known to those skilled in the art Facilities as well as corresponding cam disks, automatically controlled and with the other operating sequences of the winding machine according to the invention is coupled.

The bobbin thread is transferred in such a way from the package 2 to the empty bobbin 2 'that a shaft 23, on which, in addition to a guide roller 24, a swivel arm 25 with a seated at its outer end Guide roller 26 is attached, is rotated. This rotation of the shaft 23 takes place on the basis of a signal according to the specified overall program for the machine sequence. As soon as the swivel arm 25 reaches the in F i g. 2 executes the pivoting movement shown, the winding thread or the yarn y is carried out by the guide roller 26 into the in F i g. 2 shown position 26 'brought. A guide provided on the guide roller 24 27 (Fig. 3) lets the thread on the guide roller 24

5 6

Hatch. Like F i g. 2 shows, if the position shown below is moved, the rollers 20 come from above fed bobbin thread now on the with the empty bobbin 2 'out of engagement, so that the empty after pivoted guide roller 26, which is now in coil 2 'by the spring-loaded push-off F i g. 2 is drawn in dashed lines, the guide roller arms 19 is pressed down. 24 and from there into the transverse guide 7. Immediate 5 The transition from the in F i g. 4, shown below Then the bobbin thread is moved through the guiding position of the empty bobbin 2 'into the position shown in FIG. 1 shown approximately roller 26 (in the position 26 ') with a position on the edge of the package 2 can by the at her the empty bobbin 2 'provided catch slot in the base end with rollers 33 provided auxiliary arms 29 unterrung brought, caught there and separated and supported, which are spring-loaded and attached to theirs thus are hinged to the pivot pin 30 from the completely wound on bobbin 2 io other end, transferred to the empty reel 2 '. As Fig. 2 shows, the auxiliary arms 29 ensure that the after runs the empty bobbin 2 'moving down onto the empty bobbin 2' at the moment in The bobbin thread enters the guide 7 and is there automatically with the rollers 4, but not already with it table, whereupon it is again in contact in the north rollers 5, additionally through the paint way is guided. If the roller 33 is supported when entering 15, which ensures of the bobbin thread in the catching slot of the empty bobbin 2 'that the empty bobbin 2' during its downward movement Occurring jerk not always in a reliable drive connection with the sufficient to separate the winding thread should, if necessary, can stand near the idle drive roller 1. Without the additional support reel 2 'in the position in which it could do its preparatory work by the rollers 33, the empty reel 2' with the Rotation performs, a separating knife provided 20 drive roller 1 disengaged for a moment which comes after the bobbin thread has been caught as soon as it comes into contact with the rollers 5 Catch slot of the empty reel 2 'comes in on a signal. This would lead to a decrease in the chip activity occurs. the winding thread with the possibility of a thread

As soon as the bobbin thread y is broken onto the empty bobbin 2 '. The upward pressure force

is carried, the support arms 3 via the chain 25 of the rollers 33 can by adjusting the force

16 moved downward by the crank disk 15. a spring 34 by means of an adjusting bolt 35

At the same time, auxiliary arms 29, which, like FIG. 1, are prevented.

shows, are hinged to the support arms 3, in a Die in the above-described Ausfüh-

In a manner yet to be described, such a crank disk is provided for the above-mentioned example

avoids that the package 2 via a pivot pin 30 pivoting of the support arms can also be done by others

zen 30 of the auxiliary arms 29 are replaced on a bobbin take-up hydraulic or pneumatic means

31 is dropped. As soon as they are completely used up.

The wound package has been discarded, in the case of the one shown in FIG. 5 shown embodiment

the support arms 3 in their highest possible position, the support arms 3 are pivotable on the shaft 9

brought, but in such a way that it is not attached to the attachment 35. The articulated on the pivot pin 30

drive roller 1 come into contact. th auxiliary arms 29 are on the Abstützannen 3

In Fig. 4, two operating cycles of the invention are supported by a further point, which is represented by a according to the winding machine when changing the bobbin is given lock 38, which is by means of a screw 39 represents. In FIG. 4, above, the shaft 22 has been fastened against one another and a nut 40 on the support arms 3 over the in F i g. 3 position shown as far as 40 is further. As a result, the auxiliary arms 29 in the in rotated that the empty bobbin 2 'held by the drive roller 1 Fig. 5 shown lower position and wersie by the rollers 20 and 21 in three places. The location of the lock 38 can be determined by means of is supported. This support for the empty screw 39 and the nut 40 optimally adjusts the coil 2 'it is guaranteed that this also applies to external. The pressure rollers 4 are supported by bearing blocks 36 ren interferences not from their preparation 45 attached directly to the support arms 3 while the rotation enabling position pops out. the Andmckrolle 5 on bearing blocks 37 to the The pushing arms 19 are here in an auxiliary arm 29 are attached. As a result, the open position, since the empty reel 2 'by the pressure rollers 5 according to the movement of the In this position, the drive roller 1 is moved in the direction of the auxiliary arms 29. The focus of the Shaft 22 is pressed. The necessary pressure auxiliary system including the pressure rollers 5 is located pressure of the empty reel 2 'with respect to the drive roller 1 always within the pivot pin 30 and the is thereby by the already mentioned torsion auxiliary arms 29, so that in the in F i g. 5 springs shown guaranteed. ment always a backwards, d. H. counterclockwise

Like F i g. 2 shows, at this moment the deliberate, directional torque is being exerted. the The bobbin thread from the fully wound package 2 55 supports 3 have G on their outer end the empty reel 2 'transferred. After the support weights 8 and springs 43 for adjusting the arm 3 brought into its highest possible position, the compression pressure of the package 2 on the drive roller 1 they are, stay there to put the empty reel 2 'on. It goes without saying that the one shown in FIG to record. For this purpose, the empty bobbin 2 'of the support structure on both sides of the Auflaufin F i g. 4, above, into the position shown in FIG. 4, 60 coil is provided.

position shown below. This is also done in the case of the FIG. 5 shown

by a further rotation of the shaft 22, wherein then guide example high bumpers 41 for moving

the empty bobbin 2 'is provided with the continuation of the winding front of the auxiliary arms 29, which are arranged so

ganges along the surface of the drive roller 1 in that its upper ends at one of the hinges in Fig. 4, below, passes over the state shown and 65 bolts 30 removed point under the auxiliary arms 29

finally assumes the position as it was before, cf. By means of a nut 42, the high-

F i g. 1, which occupied the package 2. Adjust the bumpers 41 to a suitable height.

As soon as the empty reel 2 'is in the one shown in FIG. 4, as soon as via the program control on a lever

45 a pressure is exerted, not only the support arms 3 are pivoted downwards about the shaft 9, but also the auxiliary arms 29 are pushed upward via the push rods 41. This unloads the fully wound package onto the pick-up 31.

F i g. 6 shows a further embodiment in which the switching arms 18 are again fixed to the rotatable one Shaft 22 sit, while the push-off arms 19 are pivotally attached to this shaft. In which in Fig. 6 are the push-off arms 19 biased clockwise. The switching arms 18 rest on pawls 53 that are around Bolts 52 are pivotable. Cams 54 provided on the pawls 53 can also be connected to the other end 55 the pusher arms 19 attached bolts 56 come into engagement. The pawls 53 so serve to a Movement of the switching arms 18 and the push-off arms 19 towards one another under the action of the torsion springs to prevent. The distance between the bolts 52 of the pawl 53 and the cam 54 is set according to the included angle between the arms 18 and 19. As soon as the cams the Kirnken 53 come into engagement with the bolts 56 of the push-off arms 19, the angle between the arms 18 and 19 accordingly kept at a certain value.

When the shaft 22 to initiate the bobbin change their rotation begins, the cams 54 of the pawls 53 with the bolt 56 are in engagement. As soon as the empty reel 2 'the in F i g. 6 assumes the position shown in dashed lines, represents the shaft 22 for turn a certain time. Since the center of gravity of the empty reel 2 'with respect to the rollers 20 is closer to the shaft 22 in this position, the empty bobbin 2 'does not yet come with the drive roller 1 in touch. Thereupon the pawls 53, for example by means of a magnet, automatically is actuated, pushed upward, causing the cams 54 to disengage. this leads to

ίο to the fact that the push-off arms 19 under the action of Torsion springs are drawn in the direction of the switching arms 18. This causes the empty bobbin 2 ' pressed against the drive roller 1 via the rollers 21 and begins its preparatory rotation.

is In this embodiment, the position in which the empty reel begins its preparatory rotation, set at a certain point will. As a result, the transverse guide 7 can be positioned very far forward in the direction of the empty bobbin 2 '.

ao arrange, whereby the free lengths of the winding thread can be kept very short.

The fact that no axial movement of the package or the empty bobbin is required to change the bobbin is, the space requirement of the winding machine according to the invention is particularly small. As the winding bobbin even if it changes as a result of excessive thread tension, which can occur in the event of malfunctions, should have been deformed, it can easily be removed from the winder so that it is possible for to use the bobbin tubes inexpensive material, such as cardboard or paper.

For this purpose 2 sheets of drawings

309 507/374

Claims (1)

Patent claims: 1. Device for changing package bobbins on winding machines with drive of the bobbins on Scope at which the cylindrical bobbin case with its edges on in the direction of the drive roller pivotable support arms arranged pressure rollers is mounted and the winding thread is fed from above via a traversing device, marked a) through adjacent and above the Support arms (3) for the package (2) arranged in the direction of the drive roller (1) pivotable switching and pushing arms (18, 19) with take-up rollers (20, 21) for holding an empty reel (2 ') and for Swiveling the same onto the drive roller (1) to prepare for the bobbin change, b) by a device for transferring the bobbin thread (y) from the winding bobbin (2) on the preparatory set in rotation empty reel (2 '), consisting of one on one Swivel arm (25) arranged guide roller (26) for lateral approach of the Bobbin thread (y) to a catching slot of the empty bobbin (2 '), whereby the swivel arm (25) sits on a shaft (23) together with another guide roller (24), c) by auxiliary arms (29) for pushing off the full package (2) after it has been completed Thread transfer and d) by means of the automatic, timed actuation of the support arms (3) the switching and pushing arms (18, 19), the device (23, 24, 25) for transferring the winding thread (y) and the Auxiliary arm (29).